MoSexOy-Coated 1D TiO2 Nanotube Layers: Efficient Interface for Light-Driven Applications

Show simple item record Ng, Siowwoon Krbal, Miloš Zazpe, Raul Prikryl, Jan Charvot, Jaroslav Dvořák, Filip Strizik, Lukas Slang, Stanislav Sopha, Hanna Kosto, Yuliia Matolin, Vladimir Yam, Fong Kwong Bures, Filip Macak, Jan 2020-12-04T08:52:16Z 2020-12-04T08:52:16Z 2018
dc.identifier.issn 2196-7350
dc.description.abstract Ultrathin molybdenum oxyselenide (MoSexOy) coatings were made first ever by atomic layer deposition (ALD) within anodic 1D TiO2 nanotube layers for photoelectrochemical and photocatalytic applications. The coating thickness was controlled through varying ALD cycles from 5 to 50 cycles (corresponding to ~1 to 10 nm). In the ultraviolet region, the coatings have enhanced up to 4 times the incident photon to current conversion efficiency (IPCE), and the highest IPCE was recorded at 32% at (at λ = 365 nm). The coatings notably extended the photoresponse to the visible spectral region and remarkable improvement of photocurrent densities up to ~40 times was registered at λ = 470 nm. As a result, the MoSexOy coated-TiO2 nanotube layers have shown to be an effective photocatalyst for methylene blue (MB) degradation, and the optimal performance was credited to a coating thickness between 2 to 5 nm (feasible only by ALD). The enhancement in photo-activities of the presented heterojunction is mainly associated with the passivation effect of MoSexOy on the TiO2 nanotube walls and the suitability of bandgap position between MoSexOy and TiO2 interface for an efficient charge transfer. In addition, MoSexOy possesses a narrow bandgap, which favors the photoactivity in the visible spectral region. en
dc.language.iso en
dc.publisher Wiley-Blackwell eng
dc.relation.ispartof Advanced Materials Interfaces. February 2018, vol. 5, iss. 3, article number 1701146 eng
dc.rights open access eng
dc.rights.uri *
dc.subject TiO2 nanotubes eng
dc.subject molybdenum oxyselenide eng
dc.subject TMDCs eng
dc.subject ALD eng
dc.subject photocatalysis eng
dc.title MoSexOy-Coated 1D TiO2 Nanotube Layers: Efficient Interface for Light-Driven Applications eng
dc.type Article eng
dc.peerreviewed yes eng
dc.publicationstatus This is a postprint of an article published in Advanced Materials Interfaces. The final authenticated version is available online at: or eng
dc.identifier.doi 10.1002/admi.201701146
dc.relation.publisherversion eng
dc.project.ID EC/H2020/638857/EU/Towards New Generation of Solid-State Photovoltaic Cell: Harvesting Nanotubular Titania and Hybrid Chromophores/CHROMTISOL
dc.identifier.wos 000424210700014
dc.identifier.scopus 2-s2.0-85036572047

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